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CloudFlare Checker written in Go

License: Apache License 2.0

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go golang scanner ip-scanner cloudflare bugbounty bugbountytips bugbounty-tool

cf-check's Introduction

cf-check

Check an Host is Owned by CloudFlare.

Install

Grab from releases page, or
If you have Go1.18+ compiler installed & configured:

$ go install github.com/dwisiswant0/cf-check@latest

Usage

$ echo "uber.com" | cf-check
34.98.127.226

$ cf-check -d <FILE>

Flags

$ cf-check -h
Usage of cf-check:
  -c int
        Set the concurrency level (default: 20)
  -cf
        Show CloudFlare only
  -d    Print domains instead of IP addresses

Workaround

The goal is that you don't need to do a port scan if it's proven that the IP is owned by Cloudflare.

$ subfinder -silent -d uber.com | filter-resolved | cf-check -d | anew | naabu -silent -verify | httpx -silent

License

cf-check is distributed under Apache License 2.0.

cf-check's People

Contributors

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cf-check's Issues

Throwing some error while using on raspi(aarch64)

Hi team,
I have tried installing this tool every way, but at last its throwing me an error while running.i am on the latest version of this tool. i am running this tool on my raspi(aarch64) tried building the project in raspi too but didn't worked.

panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x79 pc=0x83808]

goroutine 1 [running]:
bufio.(*Scanner).Scan(0x0, 0x140b78)
        /snap/go/7018/src/bufio/scan.go:136 +0x28
main.main()
        /root/mytools/tools/cf-check-1.0.2/main.go:63 +0x320

Thanks in advance!

macOS support

Do you have plan to support macOS as well?
When I run it, I get:
zsh: exec format error: cf-check

[Suggestion] Check for Cloudflare Proxy on a Website

Description

Some website doesn't use cloudflare IP but it's uses Cloudflare Proxy. The target: Add an ability to make url (that has Cloudflare Proxy) part of -cf or cloudflare group.

Example

URL : bt21club.com
IP : 23.227.38.32

It has Cloudflare Proxy turned on and can be used as normal Remote Proxy.

curl http://d7uri8nf7uskq.cloudfront.net/tools/list-cloudfront-ips | jq | grep -oE "\"[0-9].*\"" | cut -d"\"" -f2 >> ranges.txt
grepcidr -v -f ranges.txt ip.txt | sort -u > validip.txt
rm ranges.txt

installing issue

go get -u -v github.com/dwisiswant0/cf-check command not working.